Home / 12,547.20-17,315.38-7,511.64

Finding the Fourth Proportional to 12,547.20, 17,315.38 and 7,511.64

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Solution

The fourth proportional to 12,547.20, 17,315.38 and 7,511.64 is: 10,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.20 : 17,315.38 = 7,511.64 : x
  2. Step 2: Convert to fraction form
    12,547.20/17,315.38 = 7,511.64/x
  3. Step 3: Cross multiply
    12,547.20x = 17,315.38 × 7,511.64
  4. Step 4: Simplify right side
    12,547.20x = 130,066,901.02
  5. Step 5: Solve for x
    x = 130,066,901.02/12,547.20
  6. Step 6: Final answer
    x = 10,366.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.